US7816657B2 - Particle therapy system - Google Patents
Particle therapy system Download PDFInfo
- Publication number
- US7816657B2 US7816657B2 US12/110,889 US11088908A US7816657B2 US 7816657 B2 US7816657 B2 US 7816657B2 US 11088908 A US11088908 A US 11088908A US 7816657 B2 US7816657 B2 US 7816657B2
- Authority
- US
- United States
- Prior art keywords
- particle
- energy
- selection system
- energy selection
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1077—Beam delivery systems
- A61N5/1079—Sharing a beam by multiple treatment stations
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/12—Arrangements for varying final energy of beam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
- A61N2005/1095—Elements inserted into the radiation path within the system, e.g. filters or wedges
Definitions
- the present embodiments relate to particle therapy.
- Particle therapy may be used for radiation therapy.
- Particle therapy includes irradiating a tissue to be treated with high-energy particle radiation.
- Protons or carbon ions are generally used for irradiation, but other types of particles, such as pions or helium ions, may be used.
- Particles interact with the tissue differently than gamma rays. As long as the particles have high energy (e.g., on the order of magnitude of >50 MeV/u), the particle interaction with the tissue is relatively low with respect to gamma rays. The interaction does not increase until after the particles have lost energy when passing through tissue. The interaction with the tissue takes place predominantly along a distance that is on the order of magnitude of a few millimeters and decreases to zero. The particle profile generated in the process is called the Bragg peak. The particle interaction makes it possible to aim the energy of the particle beam in a targeted way at a tumor, for instance, in the interior of the body while sparing the surrounding tissue and organs.
- the penetration depth of the particles and the site of the maximum effect are determined by the energy of the particle beam.
- energy levels for protons are generally in the range from 48 MeV/u to 250 MeV/u, and with carbon ions in the range from 85 MeV/u to 430 MeV/u.
- a cyclotron is used to accelerate particles to high energy. Electrically charged particles are generated by an ion source and accelerated in the cyclotron, with strong electromagnetic fields in a spiral path, to a target energy level. The particles are expelled from the cyclotron using the fastest spiral path at the periphery of the cyclotron. After the particle beam leaves the cyclotron, the energy level is adjusted, so that the energy of the particle beam is adapted to the desired penetration depth.
- a selection system is connected downstream of the cyclotron. The selection system may be used to adjust the energy level.
- a beam transporting system is used to carry the particle beam to the desired treatment place. Further adjustment of the energy level of the particle beam—may occur downstream of the energy selection system.
- Cyclotron-based particle therapy systems may accelerate two different types of particles and use the two different types of particles for irradiation. For instance, each type of particle is accelerated in its own cyclotron adapted to that type of particle.
- a particle therapy system includes at least two acceleration units that are constructed and operated in a simple, economical way.
- the particle therapy system includes at least two acceleration units.
- the acceleration units may accelerate particles to at least an irradiation energy level.
- a common energy selection system which is connected to the acceleration units, may be used to reduce the energy of particles that have been accelerated by one of the acceleration units.
- the particle therapy system may be used for treatment of tumors.
- One common energy selection system may be used by a plurality of acceleration units, which are parallel to one another.
- the beam course of the various particle beams, which emerge from the acceleration units, may be united (brought together), for example, upstream of the energy selection system.
- two parallel beam courses may be combined with a single energy selection system, for example, by positioning the energy selection system in the particular beam course where the parallel beam courses are combined.
- the common energy selection system may include shielding from radiation exposure.
- An energy selection system may slow down the particle beams by interaction with material. Radiation exposure in the vicinity of an energy selection system is comparatively high.
- a single common energy selection system may include a single shielding provision from the radiation exposure. Radiation protection requirements may be reduced compared to particle therapy systems with multiple acceleration units with multiple respective downstream energy selection systems.
- the at least two acceleration units may accelerate different types of particles.
- Each of the acceleration units may accelerate its own type of particle.
- Each type of particle may include its own acceleration unit.
- the different types of particles generally differ in terms of mass, charge, and/or mass-charge ratio.
- the acceleration units may be adapted to the type of particle.
- the common energy selection system may be adjoined by a beam transporting system.
- the beam transporting system may guide the particles to one or more treatment rooms.
- the acceleration units may be embodied as a cyclotron-based acceleration system.
- the cyclotron-based acceleration system may include a common downstream energy selection system.
- the particle beam emerging from a cyclotron has a fixed energy level.
- the particle therapy system modulates or reduces the energy of both particle beams using only a single common energy selection system.
- the beam transporting system may carry each particle beam from a respective cyclotron-based acceleration system to the energy selection system.
- the beam transporting system is adapted only to the fixed energy at which the particle beam emerges from the cyclotron.
- the construction with the common downstream energy selection system may, however, also be employed in other acceleration systems, such as synchrotron-based acceleration systems.
- particle therapy system with one common energy selection system may be employed in particle therapy systems that are embodied for the joint use of protons and carbon ions.
- the common energy selection system may include at least one wedgelike or platelike element.
- FIG. 1 illustrates one embodiment of a cyclotron-based particle therapy system
- FIG. 2 illustrates one embodiment of an energy selection system with wedgelike beam shaping elements
- FIG. 3 illustrates an energy selection system with platelike beam shaping elements.
- FIG. 1 shows a particle therapy system 10 .
- the particle therapy system 10 uses two different types of particles for the irradiation, for example, of tumors.
- the particles may be protons, carbon ions, pions, helium ions, or other particles.
- the particle therapy system 10 may include a first cyclotron 11 and a second cyclotron 19 .
- a first cyclotron 11 may accelerate a first type of particle to a first target energy level.
- the accelerated (resultant) particle beam is expelled from a first cyclotron 11 and carried, via a first beam transporting system 13 downstream of the cyclotron 11 , to an energy selection system 15 .
- the energy selection system 15 may reduce the energy of the accelerated particle beam.
- a first cyclotron 11 may accelerate protons to an energy of 230 MeV.
- the energy selection system 15 may reduce (slow down) energy of the proton beam to a variably adjustable energy level of between 230 MeV and 70 MeV.
- the second cyclotron 19 may accelerate a second type of particle to a second target energy.
- the accelerated (resultant) particle beam is expelled from the second cyclotron 19 and carried to the same energy selection system 15 via a second beam transporting system 21 downstream of the cyclotron 19 .
- the energy selection system 15 may set the energy of the second particle beam to a desired energy level, as described above for the first particle beam or for protons.
- the first cyclotron 11 and the second cyclotron 19 may be disposed side by side or arbitrarily relative to one another, for example, vertically one above the other.
- the generation of the particle beam may be done with the first or the second cyclotron.
- the beam transporting systems 13 , 21 may be disposed (inserted) between the cyclotrons 11 , 19 and the energy selection system 15 .
- the beam transporting system 13 , 21 may be adapted to only one particle beam of the first type of particle with the first target energy and to a particle beam of the second type of particle with the second target energy, respectively.
- the beam transporting system may use magnets.
- the particle therapy system 10 includes a beam transporting system 23 .
- the downstream beam transporting system 23 carries (guides) the particle beam to the individual irradiation or treatment rooms 25 .
- FIG. 1 shows three treatment rooms 25 .
- the accelerated particles are aimed at a body that is to be irradiated.
- the particles may be aimed at the body from a fixed direction. (e.g., in a “fixed-beam” room), or from various directions via a rotatable gantry 29 that can be moved about an axis 27 .
- a charged particle beam is deflected by a magnet system transverse to the beam direction.
- a magnet system transverse to the beam direction.
- the particle beam is scanned with a focal size of a few millimeters in layers over the target volume. Precise irradiation that conforms to the tumor is possible. For such stratified irradiation, the energy of the particle beam is finely adapted. Other irradiation processes are possible, such as spot scanning.
- An irradiation process may include using passive beam shaping elements.
- the particle beam may be flared out.
- a collimator and/or beam-shaping elements may be placed in the beam path, such that the particle beam is adapted to the shape of a tumor.
- FIGS. 2 and 3 show embodiments of an energy selection system 15 .
- wedgelike (wedge-shaped) beam-shaping elements 17 for example, made of carbon, are disposed into the beam path 16 .
- the energy of the particle beam which as a result of the acceleration by a cyclotron has a fixed energy, may be reduced to a desired magnitude by the wedgelike beam-shaping elements 17 .
- the farther the wedgelike elements 17 are introduced into the beam path 16 the more the energy of the particle beam is reduced.
- FIG. 3 shows another energy selection system 15 .
- the energy selection system 15 shown in FIG. 3 functions similar to the energy selection system 15 shown in FIG. 2 .
- the energy selection system 15 includes platelike (plate-shaped) beam-shaping elements 18 .
- the platelike beam-shaping elements 18 may be disposed into the beam path 16 . Depending on the total thickness of the platelike elements 18 through which the particle beam passes, the energy of the particle beam is reduced.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
Description
Claims (14)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007020599 | 2007-05-02 | ||
DE102007020599A DE102007020599A1 (en) | 2007-05-02 | 2007-05-02 | Particle therapy system |
DEDE102007020599.8 | 2007-05-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20080290299A1 US20080290299A1 (en) | 2008-11-27 |
US7816657B2 true US7816657B2 (en) | 2010-10-19 |
Family
ID=39689531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/110,889 Expired - Fee Related US7816657B2 (en) | 2007-05-02 | 2008-04-28 | Particle therapy system |
Country Status (5)
Country | Link |
---|---|
US (1) | US7816657B2 (en) |
EP (1) | EP1987859B1 (en) |
CN (1) | CN101537232B (en) |
AT (1) | ATE511886T1 (en) |
DE (1) | DE102007020599A1 (en) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8344340B2 (en) | 2005-11-18 | 2013-01-01 | Mevion Medical Systems, Inc. | Inner gantry |
US8581523B2 (en) | 2007-11-30 | 2013-11-12 | Mevion Medical Systems, Inc. | Interrupted particle source |
US8791656B1 (en) | 2013-05-31 | 2014-07-29 | Mevion Medical Systems, Inc. | Active return system |
US8927950B2 (en) | 2012-09-28 | 2015-01-06 | Mevion Medical Systems, Inc. | Focusing a particle beam |
US8933650B2 (en) | 2007-11-30 | 2015-01-13 | Mevion Medical Systems, Inc. | Matching a resonant frequency of a resonant cavity to a frequency of an input voltage |
US8941083B2 (en) | 2007-10-11 | 2015-01-27 | Mevion Medical Systems, Inc. | Applying a particle beam to a patient |
US8952634B2 (en) | 2004-07-21 | 2015-02-10 | Mevion Medical Systems, Inc. | Programmable radio frequency waveform generator for a synchrocyclotron |
US9155186B2 (en) | 2012-09-28 | 2015-10-06 | Mevion Medical Systems, Inc. | Focusing a particle beam using magnetic field flutter |
US9185789B2 (en) | 2012-09-28 | 2015-11-10 | Mevion Medical Systems, Inc. | Magnetic shims to alter magnetic fields |
US9274067B2 (en) | 2011-03-07 | 2016-03-01 | Loma Linda University Medical Center | Systems, devices and methods related to calibration of a proton computed tomography scanner |
US9301384B2 (en) | 2012-09-28 | 2016-03-29 | Mevion Medical Systems, Inc. | Adjusting energy of a particle beam |
US9545528B2 (en) | 2012-09-28 | 2017-01-17 | Mevion Medical Systems, Inc. | Controlling particle therapy |
US9622335B2 (en) | 2012-09-28 | 2017-04-11 | Mevion Medical Systems, Inc. | Magnetic field regenerator |
US9661736B2 (en) | 2014-02-20 | 2017-05-23 | Mevion Medical Systems, Inc. | Scanning system for a particle therapy system |
US9681531B2 (en) | 2012-09-28 | 2017-06-13 | Mevion Medical Systems, Inc. | Control system for a particle accelerator |
US9723705B2 (en) | 2012-09-28 | 2017-08-01 | Mevion Medical Systems, Inc. | Controlling intensity of a particle beam |
US9730308B2 (en) | 2013-06-12 | 2017-08-08 | Mevion Medical Systems, Inc. | Particle accelerator that produces charged particles having variable energies |
US9950194B2 (en) | 2014-09-09 | 2018-04-24 | Mevion Medical Systems, Inc. | Patient positioning system |
US9962560B2 (en) | 2013-12-20 | 2018-05-08 | Mevion Medical Systems, Inc. | Collimator and energy degrader |
US10254739B2 (en) | 2012-09-28 | 2019-04-09 | Mevion Medical Systems, Inc. | Coil positioning system |
US10258810B2 (en) | 2013-09-27 | 2019-04-16 | Mevion Medical Systems, Inc. | Particle beam scanning |
US10646728B2 (en) | 2015-11-10 | 2020-05-12 | Mevion Medical Systems, Inc. | Adaptive aperture |
US10653892B2 (en) | 2017-06-30 | 2020-05-19 | Mevion Medical Systems, Inc. | Configurable collimator controlled using linear motors |
US10675487B2 (en) | 2013-12-20 | 2020-06-09 | Mevion Medical Systems, Inc. | Energy degrader enabling high-speed energy switching |
US10925147B2 (en) | 2016-07-08 | 2021-02-16 | Mevion Medical Systems, Inc. | Treatment planning |
US11103730B2 (en) | 2017-02-23 | 2021-08-31 | Mevion Medical Systems, Inc. | Automated treatment in particle therapy |
US11311746B2 (en) | 2019-03-08 | 2022-04-26 | Mevion Medical Systems, Inc. | Collimator and energy degrader for a particle therapy system |
Families Citing this family (10)
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DE102009040457B4 (en) * | 2009-08-27 | 2013-05-29 | Technische Universität Dresden | Device for the selection of particles of specific energy from particle beams |
US8217366B2 (en) | 2009-11-02 | 2012-07-10 | Electronics And Telecommunications Research Institute | Carbon ion generating device and tumor treatment apparatus using the same |
DE102011102977A1 (en) * | 2011-05-23 | 2012-11-29 | Gsi Helmholtzzentrum Für Schwerionenforschung Gmbh | Multiple range modulators |
JP5763218B2 (en) * | 2012-01-16 | 2015-08-12 | 住友重機械工業株式会社 | Charged particle beam irradiation system |
JP6552859B2 (en) * | 2015-03-31 | 2019-07-31 | 住友重機械工業株式会社 | Charged particle beam therapy system |
WO2018076790A1 (en) * | 2016-10-31 | 2018-05-03 | 南京中硼联康医疗科技有限公司 | Neutron capture therapy system |
CN108811297A (en) * | 2017-05-03 | 2018-11-13 | 王云 | A kind of medical proton heavy ion avcceleration |
CN107596579B (en) * | 2017-10-12 | 2018-06-05 | 合肥中科离子医学技术装备有限公司 | Proton therapy system based on compact superconducting cyclotron |
CN108478940A (en) * | 2018-04-28 | 2018-09-04 | 合肥中科离子医学技术装备有限公司 | The system for carrying out tumour radiotherapy based on heavy ion cyclotron |
JP6826628B2 (en) * | 2019-04-12 | 2021-02-03 | 住友重機械工業株式会社 | Charged particle beam therapy device and energy adjustment method for charged particle beam |
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- 2008-05-04 CN CN2008101314547A patent/CN101537232B/en not_active Expired - Fee Related
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Cited By (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8952634B2 (en) | 2004-07-21 | 2015-02-10 | Mevion Medical Systems, Inc. | Programmable radio frequency waveform generator for a synchrocyclotron |
USRE48047E1 (en) | 2004-07-21 | 2020-06-09 | Mevion Medical Systems, Inc. | Programmable radio frequency waveform generator for a synchrocyclotron |
US8916843B2 (en) | 2005-11-18 | 2014-12-23 | Mevion Medical Systems, Inc. | Inner gantry |
US8344340B2 (en) | 2005-11-18 | 2013-01-01 | Mevion Medical Systems, Inc. | Inner gantry |
US9925395B2 (en) | 2005-11-18 | 2018-03-27 | Mevion Medical Systems, Inc. | Inner gantry |
US10722735B2 (en) | 2005-11-18 | 2020-07-28 | Mevion Medical Systems, Inc. | Inner gantry |
US9452301B2 (en) | 2005-11-18 | 2016-09-27 | Mevion Medical Systems, Inc. | Inner gantry |
US10279199B2 (en) | 2005-11-18 | 2019-05-07 | Mevion Medical Systems, Inc. | Inner gantry |
US8907311B2 (en) | 2005-11-18 | 2014-12-09 | Mevion Medical Systems, Inc. | Charged particle radiation therapy |
US8941083B2 (en) | 2007-10-11 | 2015-01-27 | Mevion Medical Systems, Inc. | Applying a particle beam to a patient |
US8970137B2 (en) | 2007-11-30 | 2015-03-03 | Mevion Medical Systems, Inc. | Interrupted particle source |
US8581523B2 (en) | 2007-11-30 | 2013-11-12 | Mevion Medical Systems, Inc. | Interrupted particle source |
USRE48317E1 (en) | 2007-11-30 | 2020-11-17 | Mevion Medical Systems, Inc. | Interrupted particle source |
US8933650B2 (en) | 2007-11-30 | 2015-01-13 | Mevion Medical Systems, Inc. | Matching a resonant frequency of a resonant cavity to a frequency of an input voltage |
US9274067B2 (en) | 2011-03-07 | 2016-03-01 | Loma Linda University Medical Center | Systems, devices and methods related to calibration of a proton computed tomography scanner |
US9880301B2 (en) | 2011-03-07 | 2018-01-30 | Loma Linda University Medical Center | Systems, devices and methods related to calibration of a proton computed tomography scanner |
US9185789B2 (en) | 2012-09-28 | 2015-11-10 | Mevion Medical Systems, Inc. | Magnetic shims to alter magnetic fields |
US10254739B2 (en) | 2012-09-28 | 2019-04-09 | Mevion Medical Systems, Inc. | Coil positioning system |
US9681531B2 (en) | 2012-09-28 | 2017-06-13 | Mevion Medical Systems, Inc. | Control system for a particle accelerator |
US9706636B2 (en) | 2012-09-28 | 2017-07-11 | Mevion Medical Systems, Inc. | Adjusting energy of a particle beam |
US9723705B2 (en) | 2012-09-28 | 2017-08-01 | Mevion Medical Systems, Inc. | Controlling intensity of a particle beam |
US9155186B2 (en) | 2012-09-28 | 2015-10-06 | Mevion Medical Systems, Inc. | Focusing a particle beam using magnetic field flutter |
US9622335B2 (en) | 2012-09-28 | 2017-04-11 | Mevion Medical Systems, Inc. | Magnetic field regenerator |
US9545528B2 (en) | 2012-09-28 | 2017-01-17 | Mevion Medical Systems, Inc. | Controlling particle therapy |
US10368429B2 (en) | 2012-09-28 | 2019-07-30 | Mevion Medical Systems, Inc. | Magnetic field regenerator |
US9301384B2 (en) | 2012-09-28 | 2016-03-29 | Mevion Medical Systems, Inc. | Adjusting energy of a particle beam |
US10155124B2 (en) | 2012-09-28 | 2018-12-18 | Mevion Medical Systems, Inc. | Controlling particle therapy |
US8927950B2 (en) | 2012-09-28 | 2015-01-06 | Mevion Medical Systems, Inc. | Focusing a particle beam |
US8791656B1 (en) | 2013-05-31 | 2014-07-29 | Mevion Medical Systems, Inc. | Active return system |
US9730308B2 (en) | 2013-06-12 | 2017-08-08 | Mevion Medical Systems, Inc. | Particle accelerator that produces charged particles having variable energies |
US10258810B2 (en) | 2013-09-27 | 2019-04-16 | Mevion Medical Systems, Inc. | Particle beam scanning |
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Also Published As
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EP1987859A2 (en) | 2008-11-05 |
DE102007020599A1 (en) | 2008-11-06 |
CN101537232A (en) | 2009-09-23 |
US20080290299A1 (en) | 2008-11-27 |
EP1987859B1 (en) | 2011-06-08 |
ATE511886T1 (en) | 2011-06-15 |
CN101537232B (en) | 2012-08-22 |
EP1987859A3 (en) | 2008-12-10 |
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